How many Watts can WaterLily produce? Ryan Young May 28, 2019 18:34 Updated Follow WaterLily 12V can produce up to 15W. WaterLily USB can produce up to 15W. Related articles What kind of connectors does WaterLily use? How does WaterLily compare to portable solar? How many Volts can WaterLily produce? Do I need a charge controller? Can I charge USB devices with 12V turbine? Comments 0 comments Please sign in to leave a comment.